"Sick time accruals" . The term could be a little misleading. In my book, Delta doesn't really "accrue" sick time since you don't accrue it and roll it over to the next year. It is a yearly "use it or lose it" plan year by year. Yes, each year has more hours than UAL but over the long haul, if a UAL pilot doesn't need or stratgecially use al lot of sick time, they will have a sizeable sick time accrual at end of career. So, to me, sometimes DAL better, sometimes UAL system better. It's analogous to life insurance. Are you betting you are going to be healthy or ??????